Income Taxes - Reconciliation of U.S. Federal Statutory Tax Rate to Company's Effective Tax Rate (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income tax provision
Effective tax rate		17.00%	20.50%	22.00%
BPEA Transaction gain	$ 641.9	$ 133.1	$ 641.9	$ 0.0
Unrealized gains		$ 2.6	59.9
EQT AB (“EQT”)
Income tax provision
Equity securities, realized gain			43.8
Unrealized gains			$ 57.9
Controlling Interest
Income tax provision
Statutory U.S. federal tax rate		21.00%	21.00%	21.00%
State income taxes, net of federal benefit		3.50%	3.50%	3.50%
Foreign operations		(4.10%)	(1.70%)	(1.70%)
Compensation plans		1.10%	0.80%	2.00%
Changes in tax laws		0.00%	0.00%	2.40%
Change in valuation allowances		(0.10%)	0.30%	1.10%
Unrecognized tax benefits		0.60%	0.40%	0.10%
BPEA Transaction		0.00%	(1.00%)	0.00%
Changes in U.S. tax provision to return		(0.70%)	0.00%	0.40%
Other		(0.40%)	0.00%	0.10%
Effective tax rate		20.90%	23.30%	28.90%
Non-controlling interests:
Income tax provision
Effect of income from non-controlling interests		(3.90%)	(2.80%)	(6.90%)

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to disposition of asset. Includes, but is not limited to, intra-entity transfer of asset other than inventory.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to noncontrolling interest income (loss) exempt from income taxes.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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Amount of gain (loss) on sale or disposal of an equity method investment.

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Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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